mirror of
https://github.com/golang/sys.git
synced 2026-02-08 11:46:04 +03:00
8c0a5eacba
This CL adds in the necessary types and constants to support Linux filesystem encryption. This includes the structs for the keys and polices as well as the constants for key size and encryption algorithms. This code also reduces the scope of some of the regexes in mkerrors.sh. This is to reduce the number of unrelated constants added in with this change. Note that due to a bug in the Linux uapi headers, not all of the necessary constants and structures are declared in linux/fs.h despite being part of the kernel ABI. This means that some constants and types had to be manually added in. The bug has been patched (https://patchwork.kernel.org/patch/9662723), and the manual additions can be removed when the patch is merged into the mainline kernel. Change-Id: Ib508ad99bdf4c0068933ffcf351c52bb359cfcf4 Reviewed-on: https://go-review.googlesource.com/41417 Reviewed-by: Matt Layher <mdlayher@gmail.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Matt Layher <mdlayher@gmail.com> TryBot-Result: Gobot Gobot <gobot@golang.org>
546 lines
13 KiB
Bash
Executable File
546 lines
13 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2009 The Go Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style
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# license that can be found in the LICENSE file.
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# Generate Go code listing errors and other #defined constant
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# values (ENAMETOOLONG etc.), by asking the preprocessor
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# about the definitions.
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unset LANG
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export LC_ALL=C
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export LC_CTYPE=C
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if test -z "$GOARCH" -o -z "$GOOS"; then
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echo 1>&2 "GOARCH or GOOS not defined in environment"
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exit 1
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fi
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# Check that we are using the new build system if we should
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if [[ "$GOOS" -eq "linux" ]] && [[ "$GOARCH" != "sparc64" ]]; then
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if [[ "$GOLANG_SYS_BUILD" -ne "docker" ]]; then
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echo 1>&2 "In the new build system, mkerrors should not be called directly."
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echo 1>&2 "See README.md"
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exit 1
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fi
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fi
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CC=${CC:-cc}
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if [[ "$GOOS" -eq "solaris" ]]; then
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# Assumes GNU versions of utilities in PATH.
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export PATH=/usr/gnu/bin:$PATH
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fi
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uname=$(uname)
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includes_Darwin='
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#define _DARWIN_C_SOURCE
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#define KERNEL
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#define _DARWIN_USE_64_BIT_INODE
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/ptrace.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <termios.h>
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'
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includes_DragonFly='
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <sys/ioctl.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <termios.h>
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#include <netinet/ip.h>
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#include <net/ip_mroute/ip_mroute.h>
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'
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includes_FreeBSD='
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/event.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <sys/ioctl.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <termios.h>
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#include <netinet/ip.h>
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#include <netinet/ip_mroute.h>
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#include <sys/extattr.h>
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#if __FreeBSD__ >= 10
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#define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10
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#undef SIOCAIFADDR
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#define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data
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#undef SIOCSIFPHYADDR
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#define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data
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#endif
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'
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includes_Linux='
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#define _LARGEFILE_SOURCE
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#define _LARGEFILE64_SOURCE
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#ifndef __LP64__
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#define _FILE_OFFSET_BITS 64
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#endif
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#define _GNU_SOURCE
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// <sys/ioctl.h> is broken on powerpc64, as it fails to include definitions of
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// these structures. We just include them copied from <bits/termios.h>.
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#if defined(__powerpc__)
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struct sgttyb {
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char sg_ispeed;
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char sg_ospeed;
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char sg_erase;
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char sg_kill;
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short sg_flags;
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};
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struct tchars {
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char t_intrc;
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char t_quitc;
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char t_startc;
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char t_stopc;
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char t_eofc;
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char t_brkc;
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};
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struct ltchars {
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char t_suspc;
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char t_dsuspc;
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char t_rprntc;
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char t_flushc;
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char t_werasc;
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char t_lnextc;
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};
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#endif
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#include <bits/sockaddr.h>
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#include <sys/epoll.h>
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#include <sys/inotify.h>
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#include <sys/ioctl.h>
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#include <sys/mman.h>
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#include <sys/mount.h>
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#include <sys/prctl.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <linux/if.h>
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#include <linux/if_alg.h>
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#include <linux/if_arp.h>
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#include <linux/if_ether.h>
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#include <linux/if_tun.h>
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#include <linux/if_packet.h>
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#include <linux/if_addr.h>
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#include <linux/falloc.h>
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#include <linux/filter.h>
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#include <linux/fs.h>
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#include <linux/netlink.h>
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#include <linux/random.h>
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#include <linux/reboot.h>
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#include <linux/rtnetlink.h>
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#include <linux/ptrace.h>
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#include <linux/sched.h>
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#include <linux/wait.h>
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#include <linux/icmpv6.h>
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#include <linux/serial.h>
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#include <linux/can.h>
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#include <linux/vm_sockets.h>
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#include <net/route.h>
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#include <asm/termbits.h>
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#ifndef MSG_FASTOPEN
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#define MSG_FASTOPEN 0x20000000
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#endif
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#ifndef PTRACE_GETREGS
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#define PTRACE_GETREGS 0xc
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#endif
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#ifndef PTRACE_SETREGS
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#define PTRACE_SETREGS 0xd
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#endif
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#ifndef SOL_NETLINK
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#define SOL_NETLINK 270
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#endif
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#ifdef SOL_BLUETOOTH
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// SPARC includes this in /usr/include/sparc64-linux-gnu/bits/socket.h
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// but it is already in bluetooth_linux.go
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#undef SOL_BLUETOOTH
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#endif
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// Certain constants are missing from the fs/crypto UAPI
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#define FS_KEY_DESC_PREFIX "fscrypt:"
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#define FS_KEY_DESC_PREFIX_SIZE 8
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#define FS_MAX_KEY_SIZE 64
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'
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includes_NetBSD='
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/event.h>
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/termios.h>
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#include <sys/ttycom.h>
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#include <sys/wait.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_mroute.h>
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#include <netinet/if_ether.h>
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// Needed since <sys/param.h> refers to it...
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#define schedppq 1
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'
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includes_OpenBSD='
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/event.h>
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#include <sys/mman.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/sysctl.h>
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#include <sys/termios.h>
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#include <sys/ttycom.h>
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#include <sys/wait.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_types.h>
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#include <net/if_var.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_systm.h>
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#include <netinet/ip.h>
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#include <netinet/ip_mroute.h>
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#include <netinet/if_ether.h>
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#include <net/if_bridge.h>
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// We keep some constants not supported in OpenBSD 5.5 and beyond for
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// the promise of compatibility.
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#define EMUL_ENABLED 0x1
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#define EMUL_NATIVE 0x2
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#define IPV6_FAITH 0x1d
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#define IPV6_OPTIONS 0x1
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#define IPV6_RTHDR_STRICT 0x1
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#define IPV6_SOCKOPT_RESERVED1 0x3
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#define SIOCGIFGENERIC 0xc020693a
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#define SIOCSIFGENERIC 0x80206939
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#define WALTSIG 0x4
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'
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includes_SunOS='
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#include <limits.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sockio.h>
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#include <sys/mman.h>
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#include <sys/wait.h>
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#include <sys/ioctl.h>
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#include <net/bpf.h>
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#include <net/if.h>
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#include <net/if_arp.h>
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#include <net/if_types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <termios.h>
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#include <netinet/ip.h>
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#include <netinet/ip_mroute.h>
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'
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includes='
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#include <sys/types.h>
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#include <sys/file.h>
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#include <fcntl.h>
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#include <dirent.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <netinet/ip.h>
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#include <netinet/ip6.h>
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#include <netinet/tcp.h>
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#include <errno.h>
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#include <sys/signal.h>
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#include <signal.h>
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#include <sys/resource.h>
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#include <time.h>
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'
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ccflags="$@"
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# Write go tool cgo -godefs input.
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(
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echo package unix
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echo
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echo '/*'
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indirect="includes_$(uname)"
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echo "${!indirect} $includes"
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echo '*/'
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echo 'import "C"'
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echo 'import "syscall"'
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echo
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echo 'const ('
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# The gcc command line prints all the #defines
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# it encounters while processing the input
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echo "${!indirect} $includes" | $CC -x c - -E -dM $ccflags |
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awk '
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$1 != "#define" || $2 ~ /\(/ || $3 == "" {next}
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$2 ~ /^E([ABCD]X|[BIS]P|[SD]I|S|FL)$/ {next} # 386 registers
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$2 ~ /^(SIGEV_|SIGSTKSZ|SIGRT(MIN|MAX))/ {next}
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$2 ~ /^(SCM_SRCRT)$/ {next}
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$2 ~ /^(MAP_FAILED)$/ {next}
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$2 ~ /^ELF_.*$/ {next}# <asm/elf.h> contains ELF_ARCH, etc.
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$2 ~ /^EXTATTR_NAMESPACE_NAMES/ ||
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$2 ~ /^EXTATTR_NAMESPACE_[A-Z]+_STRING/ {next}
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$2 !~ /^ETH_/ &&
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$2 !~ /^EPROC_/ &&
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$2 !~ /^EQUIV_/ &&
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$2 !~ /^EXPR_/ &&
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$2 ~ /^E[A-Z0-9_]+$/ ||
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$2 ~ /^B[0-9_]+$/ ||
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$2 == "BOTHER" ||
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$2 ~ /^CI?BAUD(EX)?$/ ||
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$2 == "IBSHIFT" ||
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$2 ~ /^V[A-Z0-9]+$/ ||
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$2 ~ /^CS[A-Z0-9]/ ||
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$2 ~ /^I(SIG|CANON|CRNL|UCLC|EXTEN|MAXBEL|STRIP|UTF8)$/ ||
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$2 ~ /^IGN/ ||
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$2 ~ /^IX(ON|ANY|OFF)$/ ||
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$2 ~ /^IN(LCR|PCK)$/ ||
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$2 ~ /(^FLU?SH)|(FLU?SH$)/ ||
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$2 ~ /^C(LOCAL|READ|MSPAR|RTSCTS)$/ ||
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$2 == "BRKINT" ||
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$2 == "HUPCL" ||
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$2 == "PENDIN" ||
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$2 == "TOSTOP" ||
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$2 == "XCASE" ||
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$2 == "ALTWERASE" ||
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$2 == "NOKERNINFO" ||
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$2 ~ /^PAR/ ||
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$2 ~ /^SIG[^_]/ ||
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$2 ~ /^O[CNPFPL][A-Z]+[^_][A-Z]+$/ ||
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$2 ~ /^(NL|CR|TAB|BS|VT|FF)DLY$/ ||
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$2 ~ /^(NL|CR|TAB|BS|VT|FF)[0-9]$/ ||
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$2 ~ /^O?XTABS$/ ||
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$2 ~ /^TC[IO](ON|OFF)$/ ||
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$2 ~ /^IN_/ ||
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$2 ~ /^LOCK_(SH|EX|NB|UN)$/ ||
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$2 ~ /^(AF|SOCK|SO|SOL|IPPROTO|IP|IPV6|ICMP6|TCP|EVFILT|NOTE|EV|SHUT|PROT|MAP|PACKET|MSG|SCM|MCL|DT|MADV|PR)_/ ||
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$2 ~ /^FALLOC_/ ||
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$2 == "ICMPV6_FILTER" ||
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$2 == "SOMAXCONN" ||
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$2 == "NAME_MAX" ||
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$2 == "IFNAMSIZ" ||
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$2 ~ /^CTL_(MAXNAME|NET|QUERY)$/ ||
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$2 ~ /^SYSCTL_VERS/ ||
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$2 ~ /^(MS|MNT)_/ ||
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$2 ~ /^TUN(SET|GET|ATTACH|DETACH)/ ||
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$2 ~ /^(O|F|FD|NAME|S|PTRACE|PT)_/ ||
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$2 ~ /^LINUX_REBOOT_CMD_/ ||
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$2 ~ /^LINUX_REBOOT_MAGIC[12]$/ ||
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$2 !~ "NLA_TYPE_MASK" &&
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$2 ~ /^(NETLINK|NLM|NLMSG|NLA|IFA|IFAN|RT|RTCF|RTN|RTPROT|RTNH|ARPHRD|ETH_P)_/ ||
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$2 ~ /^SIOC/ ||
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$2 ~ /^TIOC/ ||
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$2 ~ /^TCGET/ ||
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$2 ~ /^TCSET/ ||
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$2 ~ /^TC(FLSH|SBRKP?|XONC)$/ ||
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$2 !~ "RTF_BITS" &&
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$2 ~ /^(IFF|IFT|NET_RT|RTM|RTF|RTV|RTA|RTAX)_/ ||
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$2 ~ /^BIOC/ ||
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$2 ~ /^RUSAGE_(SELF|CHILDREN|THREAD)/ ||
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$2 ~ /^RLIMIT_(AS|CORE|CPU|DATA|FSIZE|NOFILE|STACK)|RLIM_INFINITY/ ||
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$2 ~ /^PRIO_(PROCESS|PGRP|USER)/ ||
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$2 ~ /^CLONE_[A-Z_]+/ ||
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$2 !~ /^(BPF_TIMEVAL)$/ &&
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$2 ~ /^(BPF|DLT)_/ ||
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$2 ~ /^CLOCK_/ ||
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$2 ~ /^CAN_/ ||
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$2 ~ /^ALG_/ ||
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$2 ~ /^FS_(POLICY_FLAGS|KEY_DESC|ENCRYPTION_MODE|[A-Z0-9_]+_KEY_SIZE|IOC_(GET|SET)_ENCRYPTION)/ ||
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$2 ~ /^GRND_/ ||
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$2 ~ /^SPLICE_/ ||
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$2 ~ /^(VM|VMADDR)_/ ||
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$2 !~ "WMESGLEN" &&
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$2 ~ /^W[A-Z0-9]+$/ ||
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$2 ~ /^BLK[A-Z]*(GET$|SET$|BUF$|PART$|SIZE)/ {printf("\t%s = C.%s\n", $2, $2)}
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$2 ~ /^__WCOREFLAG$/ {next}
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$2 ~ /^__W[A-Z0-9]+$/ {printf("\t%s = C.%s\n", substr($2,3), $2)}
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{next}
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' | sort
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echo ')'
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) >_const.go
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# Pull out the error names for later.
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errors=$(
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echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
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awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print $2 }' |
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sort
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)
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# Pull out the signal names for later.
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signals=$(
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echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
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awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print $2 }' |
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egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
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sort
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)
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# Again, writing regexps to a file.
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echo '#include <errno.h>' | $CC -x c - -E -dM $ccflags |
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awk '$1=="#define" && $2 ~ /^E[A-Z0-9_]+$/ { print "^\t" $2 "[ \t]*=" }' |
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sort >_error.grep
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echo '#include <signal.h>' | $CC -x c - -E -dM $ccflags |
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awk '$1=="#define" && $2 ~ /^SIG[A-Z0-9]+$/ { print "^\t" $2 "[ \t]*=" }' |
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egrep -v '(SIGSTKSIZE|SIGSTKSZ|SIGRT)' |
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sort >_signal.grep
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echo '// mkerrors.sh' "$@"
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echo '// Code generated by the command above; see README.md. DO NOT EDIT.'
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echo
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echo "// +build ${GOARCH},${GOOS}"
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echo
|
|
go tool cgo -godefs -- "$@" _const.go >_error.out
|
|
cat _error.out | grep -vf _error.grep | grep -vf _signal.grep
|
|
echo
|
|
echo '// Errors'
|
|
echo 'const ('
|
|
cat _error.out | grep -f _error.grep | sed 's/=\(.*\)/= syscall.Errno(\1)/'
|
|
echo ')'
|
|
|
|
echo
|
|
echo '// Signals'
|
|
echo 'const ('
|
|
cat _error.out | grep -f _signal.grep | sed 's/=\(.*\)/= syscall.Signal(\1)/'
|
|
echo ')'
|
|
|
|
# Run C program to print error and syscall strings.
|
|
(
|
|
echo -E "
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <errno.h>
|
|
#include <ctype.h>
|
|
#include <string.h>
|
|
#include <signal.h>
|
|
|
|
#define nelem(x) (sizeof(x)/sizeof((x)[0]))
|
|
|
|
enum { A = 'A', Z = 'Z', a = 'a', z = 'z' }; // avoid need for single quotes below
|
|
|
|
int errors[] = {
|
|
"
|
|
for i in $errors
|
|
do
|
|
echo -E ' '$i,
|
|
done
|
|
|
|
echo -E "
|
|
};
|
|
|
|
int signals[] = {
|
|
"
|
|
for i in $signals
|
|
do
|
|
echo -E ' '$i,
|
|
done
|
|
|
|
# Use -E because on some systems bash builtin interprets \n itself.
|
|
echo -E '
|
|
};
|
|
|
|
static int
|
|
intcmp(const void *a, const void *b)
|
|
{
|
|
return *(int*)a - *(int*)b;
|
|
}
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
int i, e;
|
|
char buf[1024], *p;
|
|
|
|
printf("\n\n// Error table\n");
|
|
printf("var errors = [...]string {\n");
|
|
qsort(errors, nelem(errors), sizeof errors[0], intcmp);
|
|
for(i=0; i<nelem(errors); i++) {
|
|
e = errors[i];
|
|
if(i > 0 && errors[i-1] == e)
|
|
continue;
|
|
strcpy(buf, strerror(e));
|
|
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
|
|
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
|
|
buf[0] += a - A;
|
|
printf("\t%d: \"%s\",\n", e, buf);
|
|
}
|
|
printf("}\n\n");
|
|
|
|
printf("\n\n// Signal table\n");
|
|
printf("var signals = [...]string {\n");
|
|
qsort(signals, nelem(signals), sizeof signals[0], intcmp);
|
|
for(i=0; i<nelem(signals); i++) {
|
|
e = signals[i];
|
|
if(i > 0 && signals[i-1] == e)
|
|
continue;
|
|
strcpy(buf, strsignal(e));
|
|
// lowercase first letter: Bad -> bad, but STREAM -> STREAM.
|
|
if(A <= buf[0] && buf[0] <= Z && a <= buf[1] && buf[1] <= z)
|
|
buf[0] += a - A;
|
|
// cut trailing : number.
|
|
p = strrchr(buf, ":"[0]);
|
|
if(p)
|
|
*p = '\0';
|
|
printf("\t%d: \"%s\",\n", e, buf);
|
|
}
|
|
printf("}\n\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
'
|
|
) >_errors.c
|
|
|
|
$CC $ccflags -o _errors _errors.c && $GORUN ./_errors && rm -f _errors.c _errors _const.go _error.grep _signal.grep _error.out
|